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Methodology for mapping reviews, evidence maps, and gap maps.

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Mapping reviews synthesize research evidence visually, identifying trends and knowledge gaps for researchers and policymakers. They guide future research and inform evidence-based decisions across scientific disciplines.

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Area of Science:

  • Environmental science research
  • Health and social sciences research

Background:

  • Mapping reviews offer a comprehensive overview of studies within a specific field.
  • Their visual approach enhances accessibility for identifying key findings, trends, and knowledge gaps.
  • They are significant in guiding future research, informing funding decisions, and shaping evidence-based policymaking.

Purpose of the Study:

  • To chart existing evidence on a given topic by identifying patterns, gaps, and trends.
  • To provide a broad overview of research, unlike systematic reviews that assess intervention effectiveness.
  • To enhance data accessibility through structured methodologies and visual tools.

Main Methods:

  • Utilizing a well-defined scope with inclusion and exclusion criteria for transparent study selection.
  • Employing comprehensive search strategies across multiple databases to maximize evidence capture.
  • Implementing effective screening (automated and manual) and data extraction focusing on high-level categories.
  • Leveraging advanced software tools for data extraction and visualization, including evidence gap maps.

Main Results:

  • Evidence gap maps highlight robust research areas and identify research voids.
  • Mapping reviews provide a visual synthesis of existing evidence.
  • They facilitate the identification of patterns, trends, and knowledge gaps.

Conclusions:

  • Mapping reviews are valuable for synthesizing and visualizing research evidence, particularly in environmental science.
  • Challenges include potential subjective biases in categorization and substantial resource demands.
  • Automation, artificial intelligence, and interdisciplinary collaboration are key to advancing mapping review methodologies.